Abstract: The invention prevents an assembling structure of the plated resin article from generation of squeak noise with suppressing increase in costs. The assembling structure includes a first member including a first resin molded article at least a first surface of which is coated by a coating film; and a second member including a second resin molded article at least a second surface of which is plated by a plating film. The first member and the second member are assembled so as to frictionally contact at the coating of the first surface and the plating film of the second surface; and the coating film includes a particle made from a fluorine resin. The generation of squeak noise can be suppressed with maintaining the physical properties of the coating film, such as gloss and re-coating ability.

Abstract: A digital radio telephone system for establishing communications between a main unit and a sub unit and between a plurality sub units. The system includes a main unit and a plurality of sub units. In order to establish communications with a sub unit, a calling signal including the sub unit extension number is first sent through the main unit to the sub unit. If the sub unit corresponding to an extension number in the calling signal is available, a calling acceptable signal is transmitted by the sub unit. The main unit includes an extension number multiplexer which multiplexes a plurality of sub unit extension numbers into one calling signal. Therefore, a calling signal from the main unit and calling signals from a plurality of sub units are multiplexed (combined) into a single calling signal. The main unit need only transmit a single multiplexed calling signal instead of a plurality of individual calling signals to each sub unit.

Abstract: An information service apparatus for serving one of messages stored to a caller through a telephone line, comprises: message storing unit; a table unit for storing plural tables for forming a hierarchical system for reproduction of the messages, each of the tables storing address data of a set of tablets out of the plural tables, and an address of the one of the messages, and a given code; a signal detector for detecting a data signal sent though the telephone line; and a controller response to a call for executing a first function in which the controller accesses one of the tables to determine the present scene where one of the messages is served, reads the address data of the set of the tables to next access to either of the set of the tables in accordance with the data signal by the caller, reproduces one of the messages in accordance with the read address, and detects the given code.

Abstract: In an apparatus for recording and reproducing optical information, light emitted from a laser beam source is irradiated to an optical information recording medium to record the optical information and the light reflected from the recording medium is guided to a signal detecting optical system to detect tracking and focusing error signals and a reproducing signal. The apparatus comprises a dual grading arranged through a detecting lens on an optical path on which the light reflected from the recording medium is guided to the optical system, the dual grating having diffraction gratings formed at an equal pitch on the front and rear faces of a substrate, a refractive index of the substrate being greater than the refractive indexes of the diffraction gratings; and a photodetector for detecting light transmitted through the dual grating. The dual grating may have diffraction gratings respectively formed at equal and irregular pitches on both faces of a substrate.

Abstract: An optical reproducing apparatus has a dual grating provided with a substrate, a first diffraction grating and a second diffraction grating. The first grating receives an incident light reflected from an optical recording medium and separates the reflected light into a first transmitted light and a first diffracted light. The second grating receives the first transmitted light and the first diffracted light through the substrate and discharges a second diffracted light and a second transmitted light. A tracking error signal detector detects a tracking error signal by receiving one of the second transmitted light and the second diffracted light. A focusing error signal detector detects a focusing error signal be receiving the other of the second transmitted light and the second diffracted light.